Implemented two endpoints in the client: puzzles.next() and studies.get_from_user()

[ShuvraneelMitra]

Checklist when adding a new endpoint

• Added new endpoint to the README.md
• Ensure that my endpoint name does not repeat the name of the client. Wrong: client.users.get_user(), Correct: client.users.get()
• Typed the returned JSON using TypedDicts in berserk/types/, example
• Tested GET endpoints not requiring authentification. Documentation, example
• Added the endpoint and your name to CHANGELOG.md in the To be released section (to be created if necessary)

[kraktus]

Hey! Thanks for the PR, we are on the right track, couple comments left here and there.

The returned responses are not typed though, it'd be nice to have them. In the checklist for a PR you can see an example.

You have ticked the item about tests (nice!) but I don't see them, maybe you have not committed the file?

[ShuvraneelMitra]

Hi @kraktus , thanks for your feedback. I'll be honest, when I saw "test GET ..." I just thought I had to check the results on a python environment, not create full testing scripts! On the other hand, I've never written tests for anything before, so I'll give myself a pass on that lol.

Coming to more pressing issues:
I have created the testing for the methods not requiring authentication for the puzzles and studies modules. However I run into an error while submitting the PR which seems to stem from the fact that someone hardcoded some asserts in another module which I didn't open. Can you look into it?